Retainer clip



FIG. 1 is a top side perspective view of a retainer clip, showing my new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a back side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top side plan view thereof; and,

FIG. 7 is a bottom side plan view thereof. 

CLAIM The ornamental design for a retainer clip, as shown and described. 